CN110206727A - A kind of end face compensation mechanism and the speed changer using the mechanism - Google Patents
A kind of end face compensation mechanism and the speed changer using the mechanism Download PDFInfo
- Publication number
- CN110206727A CN110206727A CN201910588898.1A CN201910588898A CN110206727A CN 110206727 A CN110206727 A CN 110206727A CN 201910588898 A CN201910588898 A CN 201910588898A CN 110206727 A CN110206727 A CN 110206727A
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- China
- Prior art keywords
- side plate
- face
- speed changer
- balance mechanism
- face compensation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000007246 mechanism Effects 0.000 title claims abstract description 49
- 238000007667 floating Methods 0.000 claims abstract description 23
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 238000001125 extrusion Methods 0.000 claims description 14
- 230000005855 radiation Effects 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 abstract description 4
- 230000002596 correlated effect Effects 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 2
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/38—Constructional details
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rotary Pumps (AREA)
Abstract
The present invention relates to a kind of end face compensation mechanism and use the speed changer of the mechanism.A kind of end face compensation mechanism, including constituting at least two blocks of side plates that end face contacts with operation element, it is connected using floating structure so that the distance between side plate is variable between side plate, balance mechanism is connected between side plate, balance mechanism is that pin shape and/or set round component, balance mechanism at least one end are engaged with side plate composition.A kind of speed changer uses above-mentioned end face compensation mechanism.Mechanical efficiency is improved using abrasion can be reduced after technical solution of the present invention, reduces material or the technique requirement to correlated parts, moreover it is possible to reduce the pollution of fluid medium.It is developed the present invention be directed to the optimization of the speed changer of earlier application, may extend to other devices for needing end face seal and working by fluid media (medium), main includes pump and motor, such as gear pump, vane pump, lobe pump.
Description
Technical field
The present invention relates to the devices for using fluid media (medium) to work, more specifically, being related to a kind of end face compensation mechanism and making
With the speed changer of the mechanism.
Background technique
It the use of the device that fluid media (medium) works mainly include pump or motor, it is extensive to improve volumetric efficiency in high pressure field
Use end face compensation technique, by taking gear pump as an example, the floating side plate being arranged in gear pump can compress under certain back pressure
Gear face compensates automatically after having the function of abrasion, to reach or approach the purpose of zero clearance cooperation, can significantly improve appearance
Product efficiency.Gear is pushed down due to floating side plate always and causes continued wear, mechanical efficiency is not only reduced and shortens the service life, more seriously
Hidden danger be counterface it is easy to appear scratching or occlusion, in practice because the reason to cause the case of failure to be occupied comparable
Specific gravity can improve these defects even in the technologies such as material or coating, but be difficult fundamentally to solve these problems.
Summary of the invention
In view of the defects existing in the prior art or insufficient, the object of the present invention is to provide a kind of improved end faces to compensate machine
Structure.
The purpose of end face compensation mechanism of the present invention is achieved in that a kind of end face compensation mechanism, including with operation element
At least two blocks of side plates for constituting end face contact are connected using floating structure between side plate so that the distance between side plate is variable, side
Balance mechanism is connected between plate, balance mechanism is pin shape and/or set round component, balance mechanism at least one end and side plate
Composition is engaged.
On the basis of above scheme, the present invention has following optinal plan:
Extrusion parts is provided on side plate, side plate is engaged by extrusion parts and balance mechanism composition.
Concave/convex-shaped structure is provided on side plate or balance mechanism, the two is engaged by concave/convex-shaped structure composition.
Latticed or radial groove is provided on side plate.
The purpose of speed changer of the present invention is achieved in that a kind of speed changer, uses above-mentioned end face compensation mechanism.
Detailed description of the invention
Fig. 1 is the simple planar structure schematic diagram after conjunction gear wheel pump of the present invention；
Fig. 2 is the cut-away illustration of part isometric structure after incorporating transmission of the present invention.
Specific embodiment
The embodiment of end face compensation mechanism of the present invention is as follows:
A kind of end face compensation mechanism is adopted between side plate including constituting at least two blocks of side plates that end face contacts with operation element
With floating structure connection so that the distance between side plate is variable, balance mechanism is connected between side plate, balance mechanism is pin shape
And/or set round component, balance mechanism at least one end are engaged with side plate composition.Referring to Fig. 1, modern pump or motor are such as
Gear pump, after the compensation technique of end face, main-body structure generally comprises side plate and is made of driving gear 10 and driven gear 8
Gear set, gear set, that is, operation element, side plate include preceding fixed side panel 1, rear fixed side panel 2, floating side plate 5, preceding fixed side panel 1
Gear set can be all clamped with floating side plate 5 and constitutes end face contact, and floating side plate 5 is set on input shaft 11 and gear shaft 9 can axis
To sliding, this floating structure connection can make the distance between floating side plate 5 and rear fixed side panel 2 variable；2 He of fixed side panel afterwards
Back pressure cavity 3 is formed by containment member such as O-ring 4 or piston etc. between floating side plate 5, when gear set passes through the meeting of transfiguration effect
So that fluid media (medium) is generated normal pressure F0 and is applied to 5 inside of floating side plate, after fluid media (medium) imports back pressure cavity 3 by aperture,
5 outside of floating side plate generates back pressure F1 simultaneously, in conjunction with the pretightning force F3 of O-ring 4, if meeting F1+F3 > F0, floating side plate
5 can axially slide push down gear set end face realize end face compensate and seal, if F1/F0 is referred to as back pressure coefficient, engineering
The upper general value 1.1~1.2 of this coefficient.Due to the viscous effect etc. of fluid media (medium), contact face can also generate volume in practice
Outer extruding force F2, this extruding force F2 is not only related with pressure size, also the revolving speed with the viscosity of fluid media (medium), workpiece
And perturb, temperature etc. it is related, if being known as (F1+F3)/(F0+F2) than pressure, it is clear that this value is a variable, and ideal feelings
Condition should be no matter how operating condition changes, than pressure value preferably close to constant and the smaller the better (than pressure value >=1), but extruding force F2
Size variation keep ideal situation difficult to realize, F1+F3 >=F0+F2max can only be made under the premise of guaranteeing volumetric efficiency.So
Current end face compensation technique suitable services can be made than voltage-controlled system by adjusting back pressure coefficient to suitably under declared working condition
Range, but in variable working condition conditional operation, such as it is changed into low speed heavy pressure from high speed and high pressure state, because several after the setting of back pressure coefficient
It can not change, at this moment just will appear the situation bigger than normal than pressing, cause mechanical efficiency to reduce and be possible to end face scuffing occur
The problem of.In practice, even if work has fluctuation in steady working condition F2, so that must have certain surplus, and surplus than pressure
Amount is related with the undulate quantity of F2, can find out from back pressure coefficient, what 10%~20% profit margin generated in a high voltage state
Lateral pressure be it is considerable, this is that the major reason that accident is damaged can occur often for end face in the prior art.
In order to improve the above problem especially fluctuation of F2, more suitable material, coating can be used or be further improved work
Skill etc., the present invention are solved by increasing balance mechanism.Balance mechanism in Fig. 1 is tooth set 7, is arranged on floating side plate 5 and solid
Surely there is extrusion parts, extrusion parts, that is, gasket 6 is simultaneously engaged with 7 composition of tooth set, therefore can produce balance on the inside of floating side plate 5
Power F4, ratio pressure at this moment have reformed into (F1+F3)/(F0+F2+F4), and to simplify relationship, setting F1=F0, that is, back pressure coefficient is equal to
1, theoretically need to only meet F3 >=F2+F4 or F3 >=F2max in this way can be achieved with same sealing effect, in this case
After adjustment to a certain extent, stop as the distance between the continuous increase side plate of F4 will no longer reduce compensation, at this moment work member
Part is not subjected to end force also with zero clearance or close work status, so can undertake the side of surplus after introducing equilibrant force F4
It to pressure, avoids all being applied on gear set, is able to solve problem or deficiency of the existing technology, therefore the present invention can be in office
It works under meaning working condition.
F2max value is difficult to measure, but substantially can consider its value close to (F1/F0- according to current back pressure coefficient setting
1) F0max, when using the present invention, the linear expansion coefficient and F3/F2max of material, the value size of back pressure coefficient etc. are all needed rationally
Analysis or setting.Increase pretightning force F3 can by increasing spring, the line footpath for increasing O-ring 4 and the means such as compression ratio, if
Directly assembly adjustment, may be such that end face damages in the biggish situation of F3/F2max value, special it can be considered to use
Running-in tooling or equipment can adjust and control the size of F3, and adjustment always is flat and smooth to end face, F4 generation effect.
My earlier application has ' a kind of invariable power speed changer ', invention, real new application number be respectively 2018115466888,
2018221237631, since speed changer is worked at any time under the conditions of variable working condition, there is end face appearance if directly using the prior art
Hidden danger easy to wear, mechanical efficiency are also difficult to improve, therefore earlier application is an important application occasion of the invention, below with reference to
Earlier application is further discussed below embodiments of the present invention.Referring to fig. 2, two pieces of floating side plates 5 has been used to clamp difference in speed changer
The gear that driving wheel is fastened, two pieces of floating side plates 5 are set in planetary gear shaft；Balance mechanism is bearing cylinder sleeve 22, bearing cylinder sleeve
22 pass through roller cup outside ring gear, are arranged and are fixed with extrusion parts on floating side plate 5, and extrusion parts is gasket 6,
The end face of bearing cylinder sleeve 22 is equipped with the double wedge 23 of concave/convex-shaped structure, and double wedge 23 is engaged with the composition of gasket 6, uses concavo-convex knot
The purpose of structure is to can change contact performance；Balance mechanism can also be spacer pin 24, and spacer pin 24 is located at the clearance portion of gear
Position, one end are threadably secured with one of floating side plate 5, and the other end withstands the floating side plate 5 on opposite, 22 He of bearing cylinder sleeve
Spacer pin 24 can choose a kind of use, and also may be used in combination keeps distribution of force more uniform.
Due to the difference of use device construction, balance mechanism is not limited to pin shape and/or set round component, it is clear that root
According to use object can there are many shape or construction, for non-central shaft-driven operation element driven gear 8 as shown in figure 1,
Planetary gear in Fig. 2 can also use axle sleeve as balance mechanism, therefore pin shape and/or set round component are only relatively more logical
Type is suitable for most of situation.When there is multiple groups operation element to constitute cascaded structure on device, needed using when the present invention
Increase corresponding side plate and balance mechanism.
On the basis of embodiment described above, the present invention has following optinal plan:
Extrusion parts is provided on side plate, side plate is engaged by extrusion parts and balance mechanism composition.
Concave/convex-shaped structure is provided on side plate or balance mechanism, the two is engaged by concave/convex-shaped structure composition.
Both the above optinal plan can be used in combination.Due to equilibrant force F4 variable quantity and material Young's modulus, connect
The attributes such as contacting surface product are related, and when the material of side plate and balance mechanism is harder, compensation stops the distance between back side panel may be
It will no longer reduce in some time, zero clearance or close state at this moment can be maintained to continue working and need to be investigated, because of F2
Generation and cause of fluctuation it is excessively complicated and random, long-time inner end gap is also possible that abrasion increases, to solve this
Potential problem constructs a kind of micro- compensation way by optinal plan.When being provided with extrusion parts, i.e. Fig. 1, Fig. 2 institute on side plate
The gasket 6 shown, extrusion parts is soft using matter, micro- bullet, the material such as copper, lead, tin, alloy being easily deformed etc., in lasting stress
Under the conditions of extrusion parts can generate creep so that the distance between side plate can slowly become smaller in longer period, if
It is provided with concave/convex-shaped structure on side plate or balance mechanism, changes contact performance using cooperations such as spherical surface, the conical surface, inclined-planes, can adjust
The variable quantity of whole side distance between plates can construct a kind of micro- compensation scheme by the creep behaviour of material in this way, and this mode more connects
It is bordering on perfect condition actually required.If not having extrusion parts on side plate, the creep that balance mechanism itself also can be used comes
Micro- compensation is constructed, but some adverse effects may be brought because length dimension is larger.
Latticed or radial groove is provided on side plate.Referring to fig. 2, due to using back side panel of the present invention to the load of gear
Lotus greatly reduces, and at this moment latticed or radial groove can be opened up at the non-tight position of 5 end face of floating side plate, as strip is shallow
Slot 21 had not only been able to maintain certain support, but also can reduce contact area and further increase mechanical efficiency, and can be used for striking off and accommodating
Tiny abrasive dust reduces the fluctuation of F2.When speed changer shown in Fig. 2 uses straight-tooth wheel construction, strip shallow slot 21 can also be used as and unload
Lotus slot and into oil discharge passage use.
The embodiment of speed changer of the present invention is as follows:
A kind of speed changer uses above-mentioned end face compensation mechanism.Here speed changer refers to ' one kind of my earlier application
Invariable power speed changer ', mechanical efficiency is improved using abrasion can be reduced after technical solution of the present invention, reduces the material to correlated parts
Material or technique requirement, moreover it is possible to reduce the pollution of fluid medium.It is developed the present invention be directed to the optimization of the speed changer of earlier application
, it may extend to other devices for needing end face seal and working by fluid media (medium), main includes pump and motor, such as gear
Pump, vane pump, lobe pump etc..
Claims (5)
1. a kind of end face compensation mechanism uses between side plate including constituting at least two blocks of side plates that end face contacts with operation element
Floating structure connects so that the distance between side plate is variable, it is characterised in that: balance mechanism, balance mechanism are connected between side plate
It is engaged for pin shape and/or set round component, balance mechanism at least one end with side plate composition.
2. a kind of end face compensation mechanism according to claim 1, it is characterised in that: be provided with extrusion parts, side on side plate
Plate is engaged by extrusion parts and balance mechanism composition.
3. a kind of end face compensation mechanism according to claim 1, it is characterised in that: be provided on side plate or balance mechanism recessed
Convex architecture, the two are engaged by concave/convex-shaped structure composition.
4. a kind of end face compensation mechanism according to claim 1, it is characterised in that: be provided with latticed or radiation on side plate
Shape groove.
5. a kind of speed changer, it is characterised in that: speed changer uses the described in any item end face compensation mechanisms of claim 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910588898.1A CN110206727A (en) | 2019-07-02 | 2019-07-02 | A kind of end face compensation mechanism and the speed changer using the mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910588898.1A CN110206727A (en) | 2019-07-02 | 2019-07-02 | A kind of end face compensation mechanism and the speed changer using the mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN110206727A true CN110206727A (en) | 2019-09-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910588898.1A Pending CN110206727A (en) | 2019-07-02 | 2019-07-02 | A kind of end face compensation mechanism and the speed changer using the mechanism |
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| CN (1) | CN110206727A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111104716A (en) * | 2019-12-09 | 2020-05-05 | 北京航空航天大学 | Automatic generation method of groove type resistance reducing structure based on thermal diffusion facing to blade |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3525580A (en) * | 1967-09-01 | 1970-08-25 | Otto Eckerle | Wear and tear-compensating high-pressure gear pump |
| GB1346474A (en) * | 1970-07-17 | 1974-02-13 | Eckerle O | Internally meshing gear pumps |
| US5447421A (en) * | 1992-11-26 | 1995-09-05 | Malfit; Jean | Hydraulic generator-receiver for power transmission, comprising an improved hydraulic balancing |
| CN201180643Y (en) * | 2008-02-29 | 2009-01-14 | 徐州科源液压有限公司 | High-pressure gear pump with pressure compensation function |
| CN107605731A (en) * | 2017-07-13 | 2018-01-19 | 北京航空航天大学 | A kind of end clearance autocompensation installation for being used for two stroke aviation piston engine scavenging pumps |
| CN107725357A (en) * | 2017-12-07 | 2018-02-23 | 江西应用技术职业学院 | A kind of crescent gear pump suitable for Water hydraulics |
| CN109372970A (en) * | 2018-12-18 | 2019-02-22 | 潘国陶 | A kind of invariable power speed changer |
-
2019
- 2019-07-02 CN CN201910588898.1A patent/CN110206727A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3525580A (en) * | 1967-09-01 | 1970-08-25 | Otto Eckerle | Wear and tear-compensating high-pressure gear pump |
| GB1346474A (en) * | 1970-07-17 | 1974-02-13 | Eckerle O | Internally meshing gear pumps |
| US5447421A (en) * | 1992-11-26 | 1995-09-05 | Malfit; Jean | Hydraulic generator-receiver for power transmission, comprising an improved hydraulic balancing |
| CN201180643Y (en) * | 2008-02-29 | 2009-01-14 | 徐州科源液压有限公司 | High-pressure gear pump with pressure compensation function |
| CN107605731A (en) * | 2017-07-13 | 2018-01-19 | 北京航空航天大学 | A kind of end clearance autocompensation installation for being used for two stroke aviation piston engine scavenging pumps |
| CN107725357A (en) * | 2017-12-07 | 2018-02-23 | 江西应用技术职业学院 | A kind of crescent gear pump suitable for Water hydraulics |
| CN109372970A (en) * | 2018-12-18 | 2019-02-22 | 潘国陶 | A kind of invariable power speed changer |
Non-Patent Citations (1)
| Title |
|---|
| 刘巍;王世明;杨远禄;: "高压齿轮泵浮动侧板的动态平衡机理", 船舶工程, no. 10, 25 October 2017 (2017-10-25) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111104716A (en) * | 2019-12-09 | 2020-05-05 | 北京航空航天大学 | Automatic generation method of groove type resistance reducing structure based on thermal diffusion facing to blade |
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